Move "Show Images" button to outside "Name" column and some other stuff

Not sure if you had kept the "Show Images" button inside the name column on purpose but I thought it would be better kept outside both in the UI and in app state (not inside :filters :name).

Regardless of whether this PR is useful or not, if you were to do the same change would you do it any differently?


+ Added .DS_Store to .gitignore
+ The name column's title disappeared when filters were visible so I fixed that.